There was one application I'd used in Windows that I liked (don't recall the name at the moment)....you could give it an image and it would convert it to a text file in very high resolution. The trouble with that is you need to view it with a very small font (2 or 3 pixels), which doesn't work well with DSL's non-scalable fonts, or an extremely high resolution screen (which doesn't work with my monitor)

After reading this thread I Googled (Woops, Google doesn't like being a verb!) and searched through SourceForge. I saw the program you mention. It was rather impressive what it could do.